This / That / These / Those + sustantive or without sustantive
That = algo que ha ocurrido / algo que alguien acaba de decir.
This / That can refer to people in the following situations:
(Telephone): This is .... e.g. Hi Sarah, this is David. = ( Hola Sarah, soy David. )
Is That ...? e.g. Is that Sarah? = ( ¿eres Sarah? )
(Introduce people): This is ... e.g.
A: Brian, this is Chris. = ( Brian, esta es Chris .)
B: Hello, Chirs - nice to meet you = ( Hola, Chirs - encantado de conocerte )
C: Hi. = ( Hola )
like this / like that = así ( de este modo / de ese modo )
e.g. Don't do it like that. Do it like this = ( No lo hagas así. Hazlo así ).
Don't look at me like that = ( No me mires así )